Duty ratings in context
The 3ABD00038162-D: Normal-use (Pn 37 kW, In 72 A) covers constant-torque loads like conveyors and pumps at full rated current. Heavy-duty (PhD 30 kW, IhD 61 A) applies for variable-torque or higher-overhead applications such as fans or crushers where the drive must sustain peak current for longer periods. Light-overload (PlD 37 kW, IlD 68 A) sits between the two — same power as normal but at slightly lower current, useful when the motor is oversized relative to the load. Match the duty class to your application's load profile and cycle time to avoid nuisance tripping or premature derating.
